Penelitian ini bertujuan untuk menganalisis (1) kelayakan Lembar Kegiatan Peserta Didik berbasis problem based learning untuk meningkatkan berpikir kritis peserta didik (2) Efektivitas Lembar Kegiatan Peserta Didik berbasis problem based learning sebagai bahan ajar yang dikembangkan (3) respon peserta didik terhadap Lembar Kegiatan Peserta Didik berbasis problem based learning untuk meningkatkan berpikir kritis peserta didik. Penelitian ini merupakan penelitian pengembangan dengan menggunakan model pengembangan 4-D dari Thiagarajan yang terdiridari define, desain, development dan dissemninate,. Dalam penelitian menggunakan subyek penelitian yaitu kelas XI MIPA 3 SMAN 1 Arosbaya. Pengumpulan data diperoleh dari hasil validasi kelayakan materi, grafis dan bahasa, serta hasil pretest-posttest, dan hasil respon peserta didik terhadap lembar kegiatan peserta didik.
Berdasarkan penelitian yang telah dilakukan menunjukkan bahwa (1) hasil validasi kelayakan materi memeperoleh presentase sebessar 82,5%, sedangkan dari ahli grafis memperoleh hasil validasi kelayakan sebesar 91,18%, dan hasil dari ahli bahasa memperoleh hasil validasi kelayakan sebesar 80%. Untuk hasil Pretest diperoleh rata-rata sebesar 56, sedangkan k untuk hasil posttest rata-rata yang diperoleh peserta didik sebesar 83. Untuk hasil respon peserta didik untuk keseluruhan aspek memeroleh hasil rata-rata presentase sebessar 90,15%. Hal ini menunjukkan bahwa lembar kegiatan berbasis problem based learning sangat layak untuk digunakan.
Kata kunci : LKPD, Problem Based Learning, Brerpikir Kritis, Respon Peserta didik.
This study aims to analyze (1) the feasibility of Student Activity Sheets based on problem based learning to improve students' critical thinking (2) Effectiveness of Student Activity Sheets based on problem based learning as teaching material developed (3) the responses of students to the Student Activity Sheets Students based on problem based learning to improve students' critical thinking. This research is a development study using a 4-D development model from Thiagarajan consisting of define, design, development, and dissemination, In the study using research subjects, namely class XI MIPA 3 SMAN 1 Arosbaya. Data collection was obtained from the results of the validation of the feasibility of the material, graphics and language, as well as the results of the pretest-posttest, and the results of the students' responses to the student activity sheets.
Based on the research that has been done shows that (1) the results of the validation of the feasibility of the material obtained a percentage of 82.5%, while the graphic experts obtained the results of the validation of eligibility of 91.18%, and the results of the linguists obtained the results of the validation of 80%. For the pretest results obtained an average of 56, while k for the average posttest results obtained by students amounted to 83. For the results of the students' responses to all aspects obtained an average percentage of 90.15%. This shows that the problem-based learning activity sheet is very feasible to use.
Keywords: LKPD, Problem Based Learning, Critical Thinking, Student Response.